MBS models can be created interactively in MotionView using its
easy to use interface.
Add an Entity
To add an entity:
Right-click on the entity toolbar to bring up the Add “Entity” dialog.
Enter a Label and Variable for the entity.
Click OK to add the entity and close the dialog.
Tip: Click Apply to add the entity while retaining the
dialog to add additional entities.
When the entity is added, the last added entity gets selected and its panel is displayed in
the panel area. The entity is now available for editing.
Note: Certain entities like Point, Body, Graphics, Joints, Bushings, SpringDamper,
Forces etc. can be added as pair. A pair can be made symmetric in the Global XZ
plane
It is recommended to provide a meaningful Variable name (varname) to entities. Entities are
identified and referenced through their variable names.
Edit an Entity
To edit any entity, it needs to be selected to display its panel. An
entity can be selected by clicking on the entity in the browser or by clicking on the entity
graphics (if available) in the modeling window. To filter the entity being
selected using the graphics area, left click on the entity toolbar. Once the entity gets
selected, its panel is displayed.
The panel for an entity shows its properties, reference to other entities and are arranged
in horizontal tabs. Pair entities will have Left and Right vertical tabs.
A property could be any one of the following:
Real, Integer, String data
File reference
Drop-down option
Entity reference
A property can be parametrically linked to a property of another entity.
The Expression Builder can be used to build complex expressions and access entity
properties.
An entity reference in the panel is indicated by a yellow colored collector. Clicking on
the collector makes it active indicated by a cyan border. When picking mode is active on a
collector, the entity selector gets deactivated.
When the collector is active, the reference can be resolved through:
Picking the entity in the graphics area, if the entity has a graphical
representation.
OR
Select dialog by clicking again (double-click) on the collector.
Mouse and Keyboard Controls
Use the following mouse and keyboard controls to manipulate the view of the model in the
modeling window.
Press
To do this
Ctrl+Left mouse
Rotate the model.
Ctrl+Right mouse
Pan the model.
Ctrl+Scroll wheel
Zoom in/out.
'F’ key
Fit the model to the window.
Tip: These default controls can be changed from Tools > Options.
Creating a multi-body model consists of creating entities such as bodies, points, graphics,
joints, force elements and outputs. A CAD geometry can also be used as an input to create
bodies and graphics.
Use CAD Geometry
MotionView supports reading several variety of CAD formats. CAD
components can be imported to create bodies and associated graphics.
Interact with CAD geometry
MotionView can recognize features in the CADGraphics that may
be used to create points and curves needed as reference for other entities. This feature
needs to be turned on (off by default) from Tools > Options > Build Model > Allow CAD feature recognition for
picking.
With this feature on, geometrical objects can be used to define MotionView entities. For example, while picking into a Point collector,
an arc center can be located to automatically create a point at that location.
Similarly, an edge or an axis can be used to automatically create vector entity.